Durable anti-oil-fouling superhydrophilic membranes for oil-in-water emulsion separation

Fu, S, Xu, Y, Wang, H, Sun, F, He, J, Liu, Z, Xu, Z, Wang, Hongxia and Lin, Tong 2021, Durable anti-oil-fouling superhydrophilic membranes for oil-in-water emulsion separation, Journal of Polymer Engineering, vol. 41, no. 8, pp. 681-689, doi: 10.1515/polyeng-2021-0111.


Title Durable anti-oil-fouling superhydrophilic membranes for oil-in-water emulsion separation
Author(s) Fu, S
Xu, Y
Wang, H
Sun, F
He, J
Liu, Z
Xu, Z
Wang, HongxiaORCID iD for Wang, Hongxia orcid.org/0000-0003-0247-9791
Lin, TongORCID iD for Lin, Tong orcid.org/0000-0002-1003-0671
Journal name Journal of Polymer Engineering
Volume number 41
Issue number 8
Start page 681
End page 689
Total pages 10
Publisher Walter de Gruyter GmbH
Place of publication Berlin, Germany
Publication date 2021-09
ISSN 0334-6447
2191-0340
Keyword(s) durable
epoxide
iron ion
polydopamine
superhydrophilic
Summary Abstract Marine mussel-inspired polydopamine (PDA) coatings show excellent hydrophilicity and substrate-independent adhesion ability, but low stability, especially in a harsh environment such as strong acid or strong base, significantly restricts their applications. In this work, we prepare a novel superhydrophilic and underwater superoleophobic coating based on a modified PDA. Diglycidyl resorcinol ether (DGRE) polyethyleneimine (PEI) and iron ions were incorporated into PDA to strengthen the cross-linking and coating durability. By using three chemically inert hydrophobic membranes, polytetrafluoroethylene (PTFE), poly(vinylidene fluoride), and polypropylene, as substrates, we showed that PDA/PEI/DGRE-coated membranes had a water contact angle (CA) of 0° and underwater oil CA above 157°, and their underwater oil SAs were <7°. The coating is durable against both physical and chemical damages including ultrasound and heat treatments, as well as acid/alkaline etching. After ultrasound treatment in water for 60 min, and heating treatment for 3 h, or acid/alkaline etching for 3 h, the coated PTFE membrane still showed water CAs of ∼0° in air and underwater oil CAs of ∼150°. The coated membranes can efficiently separate oil-in-water emulsions, even in strong acid and base environments. The water flux was above 1500 L m−2 h−1, and the oil rejection was above 99%.
Language eng
DOI 10.1515/polyeng-2021-0111
Field of Research 0912 Materials Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30153815

Document type: Journal Article
Collections: Institute for Frontier Materials
GTP Research
Connect to link resolver
 
Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved.

Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 0 times in TR Web of Science
Scopus Citation Count Cited 0 times in Scopus
Google Scholar Search Google Scholar
Access Statistics: 23 Abstract Views  -  Detailed Statistics
Created: Fri, 23 Jul 2021, 08:30:34 EST

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.